博客为日常工作学习积累总结：

1.升级git版本：

参考博客：https://blog.csdn.net/yuexiahunone/article/details/78647565由于新的版本可以使用gitea功能所以升级git版本，centos7默认git版本如下：

[root@git ~]# git --version
git version 1.8.3.1

2.yum默认安装不适合生成环境需要编译安装此步奏忽略：

yum命令安装git是最简单的,直接键入命令安装就可以了

yum install git -yy

3.编译安装：

yum install curl-devel expat-devel gettext-devel openssl-devel zlib-devel gcc perl-ExtUtils-MakeMaker

wget https://github.com/git/git/archive/v2.9.5.zip

unzip v2.9.5.zip

cd git-2.9.5

make prefix=/usr/local/git all

make prefix=/usr/local/git install

rm -rf /usr/bin/git

ln -s /usr/local/git/bin/git /usr/bin/git

git --version

[root@git git-2.9.5]# git --version
git version 2.9.5

4.初始化：

[root@git ~]# git config

git help

[root@git ~]# mkdir test

[root@git ~]# cd test/

[root@git learngit]# git init
Initialized empty Git repository in /root/learngit/.git/

[root@git learngit]# git config --list
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true

5.配置git目录：

[root@git learngit]# git config --global user.name "Eric-xgc"
[root@git learngit]# git config --global user.email 741017474@qq.com

[root@git learngit]# git config --list
user.name=Eric-xgc
user.email=741017474@qq.com
core.repositoryformatversion=0
core.filemode=true
core.bare=false
core.logallrefupdates=true

6.git应用原理：

图片来源老男孩教育郭宏泽

git add

git status

git status -s

git diff

git diff --staged

git commit

git reset

git rm

git rm --cached README

git mv

7.测试命令功能：

1.初始化后

[root@git test]# git status
On branch master

Initial commit

nothing to commit (create/copy files and use "git add" to track)

2.新增一个文件

[root@git test]# vim index.html
<h1>welcome to ht <h1>

[root@git test]# git status     
On branch master

Initial commit

Untracked files:
  (use "git add <file>..." to include in what will be committed)

index.html

nothing added to commit but untracked files present (use "git add" to track)

3.提交一个文件到暂存区

[root@git test]# git add index.html
[root@git test]# git status        
On branch master

Initial commit

Changes to be committed:
  (use "git rm --cached <file>..." to unstage)

new file:   index.html

4.提交到本地仓库

[root@git test]# git commit -m "first commit"
[master (root-commit) 6083db0] first commit
 1 file changed, 1 insertion(+)
 create mode 100644 index.html

[root@git test]# git status
On branch master
nothing to commit, working tree clean

5.查看提交日志

[root@git test]# git log
commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

6.测试rm命令

[root@git test]# vim pay.html
pay modle

[root@git test]# git status
On branch master
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

new file:   pay.html

[root@git test]# vim news.html
news center

[root@git test]# git add news.html

[root@git test]# git status   
On branch master
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

new file:   news.html
        new file:   pay.html

[root@git test]# git rm --cached pay.html
rm 'pay.html'

[root@git test]# git status
On branch master
Changes to be committed:
  (use "git reset HEAD <file>..." to unstage)

new file:   news.html

Untracked files:
  (use "git add <file>..." to include in what will be committed)

pay.html

[root@git test]# git commit -m "news"
[master 33a1733] news
 1 file changed, 1 insertion(+)
 create mode 100644 news.html
[root@git test]# git log
commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

[root@git test]# git status
On branch master
Untracked files:
  (use "git add <file>..." to include in what will be committed)

pay.html

nothing added to commit but untracked files present (use "git add" to track)

[root@git test]# vim pay.html
pay modle

22222222
bug

[root@git test]# git add pay.html
[root@git test]# git commit -m "pay"
[master 2e667e5] pay
 1 file changed, 4 insertions(+)
 create mode 100644 pay.html

[root@git test]# git log
commit 2e667e57e89b6794592563c14ae52cf2da3c8736
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:48:54 2019 +0800

pay

commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

7.分支管理

业务场景：当需要开发新的模块时会经常改动代码，不能影响主分支master

创建分支：about

git branch about

[root@git test]# git branch about

切换分支

git checkout about

[root@git test]# git checkout about
Switched to branch 'about'

[root@git test]# git status
On branch about
nothing to commit, working tree clean

测试分支与主分支：

[root@git test]# vim about.html
about us

[root@git test]# git add .

[root@git test]# git commit -m "about"

测试about分支有4次提交

[root@git test]# git log
commit 6a24c259931e8401ac46448d4873f77eae167de9
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 15:46:34 2019 +0800

about

commit 2e667e57e89b6794592563c14ae52cf2da3c8736
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:48:54 2019 +0800

pay

commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

切回主分支查看log只有3次提交

[root@git test]# git checkout master
Switched to branch 'master'
[root@git test]# git log
commit 2e667e57e89b6794592563c14ae52cf2da3c8736
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:48:54 2019 +0800

pay

commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

回到测试分支

[root@git test]# git checkout about
Switched to branch 'about'
[root@git test]# git branch
* about
  master

[root@git test]# git branch -v
* about  6a24c25 about
  master 2e667e5 pay

8. 将测试分支合并到主分支：

[root@git test]# vim about2.html
about2

[root@git test]# git add .
[root@git test]# git commit -m "about2"
[about 0283739] about2
 1 file changed, 1 insertion(+)
 create mode 100644 about2.html

测试分支有5次提交
[root@git test]# git log
commit 02837391d9b360902f8599ca91ad83eaf2560324
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 15:55:49 2019 +0800

about2

commit 6a24c259931e8401ac46448d4873f77eae167de9
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 15:46:34 2019 +0800

about

commit 2e667e57e89b6794592563c14ae52cf2da3c8736
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:48:54 2019 +0800

pay

commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

主分支还是3次提交

[root@git test]# git checkout master
Switched to branch 'master'
[root@git test]# git log
commit 2e667e57e89b6794592563c14ae52cf2da3c8736
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:48:54 2019 +0800

pay

commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

将测试分支merge到主分支：

[root@git test]# git merge about
Updating 2e667e5..0283739
Fast-forward
 about.html  | 1 +
 about2.html | 1 +
 2 files changed, 2 insertions(+)
 create mode 100644 about.html
 create mode 100644 about2.html

查看主分支log

[root@git test]# git checkout master
Already on 'master'
[root@git test]# git log
commit 02837391d9b360902f8599ca91ad83eaf2560324
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 15:55:49 2019 +0800

about2

commit 6a24c259931e8401ac46448d4873f77eae167de9
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 15:46:34 2019 +0800

about

commit 2e667e57e89b6794592563c14ae52cf2da3c8736
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:48:54 2019 +0800

pay

commit 33a17331c4060afd85d303dccad8406f8c74037b
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:46:44 2019 +0800

news

commit 6083db06d756ef50053cb439e55144242f95b5a8
Author: Eric-xgc <741017474@qq.com>
Date:   Mon Apr 1 14:31:43 2019 +0800

first commit

查看被merged的分支：

[root@git test]# git branch --merged
  about
* master

[root@git test]# git branch --no-merged

[root@git test]# git branch test
[root@git test]# git branch --merged   
  about
* master
  test

[root@git test]# vim test.html
test

testi1

[root@git test]# git add .
[root@git test]# git commit -m "test2"

[root@git test]# git branch --merged
  about
* master
[root@git test]# git branch --no-merged
  test

退出git log

在英文状态下按q退出

9.checkerout命令

git checkerout  命令：用于切换分支。

[root@git test]# git checkout master

回滚本地目录修改的文件

git checkerout  -- 修改的文件

git checkout -- index.html

测试用例：

[root@git test]# vim index.html
<h1>welcome to ht <h1>

[root@git test]# git status     
On branch master
Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

modified:   index.html

no changes added to commit (use "git add" and/or "git commit -a")

[root@git test]#  git checkout -- index.html
[root@git test]# git status                  
On branch master
nothing to commit, working tree clean

修改被撤销了，

[root@git test]# cat index.html
<h1>welcome to ht <h1>

10.reset 回滚暂存区修改的文件

git log得到的id号
git reset --hard id号

所有的操作记录

[root@git test]# git reflog
0283739 HEAD@{0}: checkout: moving from test to master
3a525df HEAD@{1}: checkout: moving from master to test
0283739 HEAD@{2}: checkout: moving from test to master
3a525df HEAD@{3}: commit: test2
eed3382 HEAD@{4}: commit: test
0283739 HEAD@{5}: checkout: moving from master to test
0283739 HEAD@{6}: checkout: moving from master to master
0283739 HEAD@{7}: merge about: Fast-forward
2e667e5 HEAD@{8}: checkout: moving from about to master
0283739 HEAD@{9}: commit: about2
6a24c25 HEAD@{10}: checkout: moving from master to about
2e667e5 HEAD@{11}: checkout: moving from about to master
6a24c25 HEAD@{12}: commit: about
2e667e5 HEAD@{13}: checkout: moving from master to about
2e667e5 HEAD@{14}: commit: pay
33a1733 HEAD@{15}: commit: news
6083db0 HEAD@{16}: commit (initial): first commit

git checkout   6083db0

8.远程仓库

[root@git ~]# git clone https://github.com/guohongze/scripts.git

[root@git ~]# cd scripts/
[root@git scripts]# ls
mysql  nfs  nginx  php  README.md  redis  svn  zookeeper

[root@git scripts]# git status
On branch master
Your branch is up-to-date with 'origin/master'.
nothing to commit, working tree clean

[root@git scripts]# git commit -m "readme update-eric"
On branch master
Your branch is up-to-date with 'origin/master'.
Changes not staged for commit:
        modified:   README.md

no changes added to commit
[root@git scripts]# git remote
origin
[root@git scripts]# git remote -v
origin  https://github.com/guohongze/scripts.git (fetch)
origin  https://github.com/guohongze/scripts.git (push)

[root@git scripts]# git push origin master

/root/learngit/test

[root@git test]# git remote add orgin https://github.com/Eric-xgc/test.git
[root@git test]# git remote -v
orgin   https://github.com/Eric-xgc/test.git (fetch)
orgin   https://github.com/Eric-xgc/test.git (push)

打标签：

[root@git test]# git tag -a v1.0 -m "feature finished"
[root@git test]# git tag
v1.0

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